Centrifugal drier.



P. B. ANDERSON.

OBNTRIFUGAL DRIER; APPLICATION FILED SEPT.25,1911.

Patented Dec. 29, 1914.

. INVENTOR.

l V/ZQ YESSES ran snares arana canton.

FRANK B. :ANDERSON, F CLEVELAND, OHIO, ASSIGNOR OF ONE-THIRD TO CHARLES O. ANDERSON AND ONE-THIRD TO ALBERT D. ANDERSON, BOTH Oil? CLEVELAND, OHIO.

CENTRIFUGAL, DRIER,

To all whomit may concern Be it ,lmown that I, FRANK B. ANDERSON, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and -State of Ohio, have invented certain new and useful Improvements in Centrifugal Driers, of which the following is a specification.

My present invention pertains to driers, the construction and advantages of which will be hereinafter set forth, reference being had to the annexed drawings, wherein:

Figure 1 is a vertical sectional view of the drier; and Fig. 2 a horizontal sectional view, taken on the line 2-2-of Fig. 1.

The'main object of the present invention resides in the production of a centrifugal drier which is continuous in its action, that is to say, one into which the material may be continuously fed and automatically withdrawn or discharged.

In the drawings, 1 denotes suitable posts or columns, to which is secured a cylindrical housing or chamber 2, provided With a' top .3, having a central opening or. aperture formed therein. The bottom 4 of said chamber or housing is provided with an upstanding rim or collar- 5, which defines the relatively large opening which is providedin the bottom. Said chamber is adapted to collectall the liquid or liquid matter which may be thrown off by the machine, and such matter is discharged through a'spout 6 whichopens into the chamber.

A cross-bar 7 is secured to the upper ends.

of columns 1, and in it is secured an adjustable bearing 8 for the upper end of a shaft 9, the lower end of the shaft finding its bearing in a block or base piece 10. K

pulley lljis secured to the shaft, preferably at a point above the top 3, and by means of v this pulley rapid motion is imparted to the shaft .and the material holding and conveying screen carried thereby. The screen, which is formed of foraminous metal, such as punched sheet metal, has thegeneral form of a truncated cone, comprising a coneshaped section 12 and a depending skirt 13,

said skirt section being substantially ver; tical. The-screen is secured at its upper end to a flanged flaring collar 14, which in turn is secured to the arms of a spider frame 15/ which is secured to the shaft 9. A' second spider frame 16 is secured to the shaft and'to thdouter ends of the arms thereof is Specification of Letters Patent.

. pplication filed September 25, 1911. Serial No. 651,212: FT -4S U E M I v I J D attached an L-shaped -hoop .1 7 which in turn is riveted or otherwise secured to thc screen adjacent to the base of the coneshaped portion 12.

A feed hopper 18, supported by suitable arms or brackets 19, extending inwardly from the top 3, projects downwardly to a slight extent into the collar 14 and disextends through, but out of contact with, the rim 5 and preferably extends to a point slightly below the bottom 4.

A scraper or takeoff device is provided for removing the accumulated material from the shelf, and in the form illustrated comprises an arm 23' the outer lower end of which is fixed to the base piece 10, the inner end of said'ar'm extending inwardly and overlying the shelf. A plow or scraper24 is detachably secured to said inner end, and preferably will be curved'so as to throw the dried materialjofl the shelf into a suitable receptacle or conveyer which will be placed below the'opening defined by the skirt 2 2.

The operation of the apparatus is as follows: The material to be dried is fedinto the hppper 1,8, and passing onto the deflector is carried outwardly into contact with the rapidly/rotating screen 12, through the meshes of which the liquid will pass, while the solids are retained, and with greater or less speed, according to the character of the material undergoing treatment and the rapidity of rotation of the screen, said solids 100 will pass downwardly along the screen surface and finally find lodgment upon the shelf 21. ,The material will tend to bank upon the shelf and against the skirt section 13 of the.screen and willbe removed and dis- '105 charged from the machine by the plow or scraper 24. The material which is 'dis- "charged will be found to'be dry.

It is conceivablethatthedepending skirt a or screen section 13, may be dispensed with 330 of a cone-shaped screen; means for intro-- ducing material to the upper end of .the same when treating certain materials, the .main function of said section being to cause the material to bank up on the shelf 21, and to thus prevent the material from passing downwardly upon the screen and out of the machine too rapidly.

The apparatus is such that the material may be constantly fed into the same. whereby acontinuous operation is obtainable, a point of manifest advantage.

Having thus described my invention, What I claim is:

1. In a centrifugal drier, the combination and against the inner surface thereof; means for rotating the screen; a shelf extending iiiwardly from the lower end of the screen, said shelf rotating therewith; and a scraper overlying said shelf adapted to remove the material from the samewhile thescreen is in rotation.

In acentrifugal drier, the combination of a cone-shaped screen; means for introducing material to and against the upper portion of the inner surface thereof; means for arresting the material at the lower end of the screen and continuously removing the same while the screen is in rotation; and means for rotating the screen.

3. In a centrifugal drier, the combination of a cone-shaped screen; means for rotating the same; a shelf extending inwardly from the lower edge of the screen; and means for continuously removing the accumulated ma-.

terial from the shelf while the screen is in rotation.

I. In a centrifugal drier, the combination of a cone-shaped screen; means for rotating the same; an annular shelf extending in- 1,122,4eo' I said shelf being fixed with reference to the screen and rotatable therewith; and means for continuously removing material which accumulates upon the shelf While the screen is in rotation. I

7. In a centrifugal drier, the combination of a; cone-shaped screen; means for rotating the same; an inwardly-projecting shelf located adjacent the lower end of the screen. said shelf being fixed with reference to the screen and rotatabletherewith; a fixed arm extending into the lower portion of the screen; and a plow or scraper secured to the inner end of said arm and overlying the shelf, said plow or scraper being curved and adapted to cut away and remove the material which accumulates upon the shelf and the adjacent portion of the screen.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

FRANK B. ANDERSON.

Witnesses: v

B. F. SEELEY, C. W. TOLAND. 

